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Processing of biodegradable waste containing raw materials of animal origin into fertilizer substrates: methodology for practice
Usťak, Sergej ; Muňoz, Jakub ; Váňa, Vojtěch
The aim of the methodology is to provide to farmers, agricultural advisors, biogas manufacturers and processors, owners and operators of biogas stations and composting plants, investors and other interested parties, the basic information on the possibilities of hygienic treatment at biodegradable waste containing animal raw materials to fertilizer substrates and the ways of their use. The patented combined method of acid and alkaline biowaste treatment ensures a sufficient stabilization and efficient hygiene of the output product, allowing to be further utilized for composting, biogasification, or for soil application as a valuable fertilizer substrate, as well. A part of the methodology is the evaluation of agrochemical efficiency at output use of fertilizer substrates in the cultivation of selected agricultural crops. The methodology is intended for a wide range of users. The methodology can serve as a basis for the adaptation of technical facilities, technological processes and also as a material for teaching at secondary agricultural schools, agricultural universities or agricultural advisors.
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The possibilities to combine biogas production and biowaste hydrothermal carbonization
Usťak, Sergej ; Honzík, Roman ; Muňoz, jakub
The objective of the methodology is to provide to farmers, agricultural consultants, owners and operators of biogas plants, to biowaste producers and processors, to experts in the field of soil reclamation and melioration, to investors and other interested parties on the concerned issues, the basic information about the potential at the combination of biogas production and biowaste hydrothermal carbonization. These options are evaluated on the basis of processing at accumulated energy intensity for the above combined processes and its comparison with conservative biogas production using the example biogas plant with installed electrical capacity of 800 kW. Part of the methodology is guided to evaluate the potential use of thermo- pressure hydrolysis unit as a device for digestate hydrothermal carbonization and other wastes in order to improve their performance, particularly in terms of employment in agriculture as highquality substrates for soil fertilization and for the purpose of soil carbon sequestration.
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